netcat on MacOS vs Linux

When we run a TCP server (nc -l 1234) with nc and send it traffic with a client (echo foobar | nc localhost 1234) nc , the client will exist.

When we run a TCP server (nc -l 1234) with nc and send it traffic with a client (echo foobar | nc localhost 1234) nc , the client will not exit.

We need to include the -N flag when running nc.

For the record, I've only experimented with MacOS's netcat implementation, and the netcat-openbsd implementation on Linux.